Soldiers take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

Military aircrafts take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

Soldiers take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

Military aircrafts take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

Soldiers take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

Soldiers take part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)

A soldier takes part in a celebration for the Independence Day of El Salvador in San Salvador, El Salvador, Sept. 15, 2019. (Photo: Alexander Pena/Xinhua)